In accordance with our Upstream Vendor's Errata Support Policy, the regular life-cycle of Scientific Linux 4 will end in February 2012.
After this date, The Upstream Vendor will discontinue the regular update services. We must follow them in this matter. Therefore, new bug fix, enhancement, and security errata updates will no longer be available for Scientific Linux 4 after the End of Life date. They will not be providing updates and so we cannot provide them. Anyone still running production workloads on Scientific Linux 4 are advised to begin upgrading to Scientific Linux 5 or 6. Upstream recommends a reinstall and not an upgrade. Please be advised that we also believe that a clean reinstall is the preferred method for moving from Scientific Linux 4 to a newer version. We will continue to provide updates as they become available to us for Scientific Linux 4 for the remaining few weeks. Again, this is a reminder of the coming end of life for Scientific Linux 4 at the end of February 2012. - Scientific Linux Development Team